| 摘要 |
<p>PURPOSE: A device for supplying power of a light emitting diode is provided to prevent the case which over fixed voltage is supplied to the light emitting diode, thereby steadily protecting the light emitting diode. CONSTITUTION: An AC voltage which a voltage rectifying unit(100) is inputted is rectified into DC voltage. A voltage converting unit(200) converts the rectified voltage to predetermined voltage. A light emitting diode protecting unit(300) compares a voltage supplied to at least one light emitting diode(400) with a reference voltage. If the voltage is higher than the reference voltage, the light emitting diode protecting unit blocks the voltage. If the voltage is lower than the reference voltage, the light emitting diode protecting unit supplies the voltage.</p> |
